/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:48:38,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:48:38,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:48:38,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:48:38,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:48:38,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:48:38,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:48:38,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:48:38,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:48:38,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:48:38,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:48:38,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:48:38,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:48:38,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:48:38,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:48:38,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:48:38,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:48:38,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:48:38,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:48:38,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:48:38,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:48:38,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:48:38,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:48:38,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:48:38,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:48:38,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:48:38,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:48:38,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:48:38,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:48:38,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:48:38,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:48:38,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:48:38,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:48:38,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:48:38,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:48:38,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:48:38,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:48:38,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:48:38,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:48:38,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:48:38,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:48:38,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:48:38,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:48:38,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:48:38,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:48:38,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:48:38,582 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:48:38,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:48:38,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:48:38,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:48:38,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:48:38,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:48:38,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:48:38,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:48:38,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:48:38,583 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:48:38,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:48:38,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:48:38,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:48:38,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:48:38,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:48:38,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:48:38,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:48:38,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:48:38,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:48:38,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:48:38,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:48:38,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:48:38,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:48:38,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:48:38,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:48:38,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:48:38,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:48:38,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:48:38,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:48:38,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:48:38,950 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:48:38,951 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-22 02:48:39,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b489f3c2/355fcfe9e05a4960aed87de23d771903/FLAG9b739774f [2020-08-22 02:48:39,577 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:48:39,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-08-22 02:48:39,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b489f3c2/355fcfe9e05a4960aed87de23d771903/FLAG9b739774f [2020-08-22 02:48:39,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b489f3c2/355fcfe9e05a4960aed87de23d771903 [2020-08-22 02:48:39,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:48:39,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:48:39,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:48:39,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:48:39,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:48:39,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:48:39" (1/1) ... [2020-08-22 02:48:39,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:39, skipping insertion in model container [2020-08-22 02:48:39,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:48:39" (1/1) ... [2020-08-22 02:48:39,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:48:39,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:48:40,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:48:40,461 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:48:40,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:48:40,605 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:48:40,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40 WrapperNode [2020-08-22 02:48:40,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:48:40,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:48:40,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:48:40,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:48:40,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40" (1/1) ... [2020-08-22 02:48:40,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40" (1/1) ... [2020-08-22 02:48:40,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40" (1/1) ... [2020-08-22 02:48:40,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40" (1/1) ... [2020-08-22 02:48:40,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40" (1/1) ... [2020-08-22 02:48:40,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40" (1/1) ... [2020-08-22 02:48:40,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40" (1/1) ... [2020-08-22 02:48:40,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:48:40,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:48:40,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:48:40,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:48:40,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:48:40,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:48:40,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:48:40,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:48:40,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:48:40,774 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:48:40,774 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:48:40,774 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:48:40,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:48:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:48:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:48:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:48:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:48:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:48:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:48:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:48:40,776 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:48:40,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:48:40,776 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:48:40,776 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:48:40,776 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:48:40,776 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:48:40,777 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:48:40,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:48:40,777 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:48:40,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:48:40,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:48:40,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:48:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:48:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:48:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:48:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:48:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:48:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:48:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:48:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:48:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:48:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:48:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:48:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:48:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:48:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:48:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:48:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:48:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:48:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:48:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:48:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:48:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:48:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:48:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:48:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:48:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:48:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:48:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:48:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:48:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:48:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:48:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:48:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:48:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:48:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:48:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:48:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:48:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:48:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:48:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:48:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:48:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:48:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:48:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:48:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:48:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:48:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:48:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:48:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:48:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:48:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:48:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:48:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:48:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:48:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:48:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:48:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:48:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:48:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:48:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:48:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:48:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:48:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:48:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:48:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:48:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:48:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:48:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:48:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:48:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:48:41,832 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:48:41,832 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:48:41,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:48:41 BoogieIcfgContainer [2020-08-22 02:48:41,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:48:41,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:48:41,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:48:41,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:48:41,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:48:39" (1/3) ... [2020-08-22 02:48:41,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbdc96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:48:41, skipping insertion in model container [2020-08-22 02:48:41,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:48:40" (2/3) ... [2020-08-22 02:48:41,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbdc96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:48:41, skipping insertion in model container [2020-08-22 02:48:41,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:48:41" (3/3) ... [2020-08-22 02:48:41,851 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-08-22 02:48:41,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:48:41,871 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:48:41,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:48:41,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:48:41,916 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:48:41,916 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:48:41,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:48:41,916 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:48:41,917 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:48:41,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:48:41,918 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:48:41,945 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-22 02:48:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:48:41,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:41,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:41,962 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:41,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:41,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1040081704, now seen corresponding path program 1 times [2020-08-22 02:48:41,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:41,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254059013] [2020-08-22 02:48:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:42,652 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:42,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:42,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:42,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:48:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:48:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:42,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254059013] [2020-08-22 02:48:42,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:42,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:48:42,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627135698] [2020-08-22 02:48:42,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:48:42,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:42,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:48:42,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:48:42,767 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-22 02:48:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:43,931 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-22 02:48:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:48:43,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:48:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:43,950 INFO L225 Difference]: With dead ends: 306 [2020-08-22 02:48:43,950 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 02:48:43,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:48:43,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 02:48:44,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-22 02:48:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 02:48:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-22 02:48:44,055 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-22 02:48:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:44,056 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-22 02:48:44,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:48:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-22 02:48:44,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:48:44,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:44,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:44,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:48:44,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:44,061 INFO L82 PathProgramCache]: Analyzing trace with hash -849158610, now seen corresponding path program 1 times [2020-08-22 02:48:44,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:44,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322636397] [2020-08-22 02:48:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,450 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:44,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:48:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:48:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:44,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322636397] [2020-08-22 02:48:44,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:44,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:48:44,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088283210] [2020-08-22 02:48:44,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:48:44,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:44,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:48:44,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:48:44,521 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-22 02:48:44,947 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:45,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:45,911 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-22 02:48:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:48:45,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:48:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:45,915 INFO L225 Difference]: With dead ends: 235 [2020-08-22 02:48:45,916 INFO L226 Difference]: Without dead ends: 149 [2020-08-22 02:48:45,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:48:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-22 02:48:45,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-22 02:48:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 02:48:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-22 02:48:45,981 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-22 02:48:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:45,982 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-22 02:48:45,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:48:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-22 02:48:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:48:45,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:45,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:45,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:48:45,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:45,995 INFO L82 PathProgramCache]: Analyzing trace with hash 846018297, now seen corresponding path program 1 times [2020-08-22 02:48:45,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:45,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258184480] [2020-08-22 02:48:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:46,367 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:46,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:46,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:48:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:48:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:46,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258184480] [2020-08-22 02:48:46,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:46,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:48:46,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020294786] [2020-08-22 02:48:46,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:48:46,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:46,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:48:46,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:48:46,461 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-22 02:48:46,823 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:47,151 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:47,408 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:47,650 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:48,906 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-22 02:48:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 02:48:48,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 02:48:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:48,912 INFO L225 Difference]: With dead ends: 248 [2020-08-22 02:48:48,913 INFO L226 Difference]: Without dead ends: 149 [2020-08-22 02:48:48,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:48:48,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-22 02:48:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-22 02:48:48,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 02:48:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-22 02:48:48,957 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-22 02:48:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:48,958 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-22 02:48:48,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:48:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-22 02:48:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 02:48:48,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:48,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:48,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:48:48,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:48,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1478840967, now seen corresponding path program 1 times [2020-08-22 02:48:48,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:48,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272268383] [2020-08-22 02:48:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,308 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:49,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:48:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:48:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 02:48:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:49,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272268383] [2020-08-22 02:48:49,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:49,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:48:49,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187109701] [2020-08-22 02:48:49,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:48:49,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:48:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:48:49,419 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-22 02:48:49,755 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:50,912 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:51,613 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-22 02:48:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:48:51,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-22 02:48:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:51,617 INFO L225 Difference]: With dead ends: 345 [2020-08-22 02:48:51,617 INFO L226 Difference]: Without dead ends: 246 [2020-08-22 02:48:51,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:48:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-22 02:48:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-22 02:48:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-22 02:48:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-22 02:48:51,669 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-22 02:48:51,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:51,670 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-22 02:48:51,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:48:51,670 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-22 02:48:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 02:48:51,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:51,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:51,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:48:51,672 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:51,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1284194314, now seen corresponding path program 1 times [2020-08-22 02:48:51,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:51,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916152601] [2020-08-22 02:48:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:51,977 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:51,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:48:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:48:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 02:48:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 02:48:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:52,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916152601] [2020-08-22 02:48:52,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:52,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:48:52,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824820625] [2020-08-22 02:48:52,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:48:52,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:52,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:48:52,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:48:52,063 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 8 states. [2020-08-22 02:48:52,483 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:53,661 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:53,924 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:54,152 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:54,370 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:54,643 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:55,685 INFO L93 Difference]: Finished difference Result 607 states and 746 transitions. [2020-08-22 02:48:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:48:55,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-22 02:48:55,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:55,694 INFO L225 Difference]: With dead ends: 607 [2020-08-22 02:48:55,694 INFO L226 Difference]: Without dead ends: 428 [2020-08-22 02:48:55,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:48:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-08-22 02:48:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 361. [2020-08-22 02:48:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-22 02:48:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 410 transitions. [2020-08-22 02:48:55,778 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 410 transitions. Word has length 79 [2020-08-22 02:48:55,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:55,779 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 410 transitions. [2020-08-22 02:48:55,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:48:55,779 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 410 transitions. [2020-08-22 02:48:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 02:48:55,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:55,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:55,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:48:55,781 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:55,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1377771002, now seen corresponding path program 1 times [2020-08-22 02:48:55,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:55,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282109742] [2020-08-22 02:48:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,086 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:48:56,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:48:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:48:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:48:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:48:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:48:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:48:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:48:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:48:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:48:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:48:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 02:48:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 02:48:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:48:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:48:56,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282109742] [2020-08-22 02:48:56,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:48:56,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:48:56,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105771371] [2020-08-22 02:48:56,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:48:56,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:48:56,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:48:56,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:48:56,193 INFO L87 Difference]: Start difference. First operand 361 states and 410 transitions. Second operand 9 states. [2020-08-22 02:48:56,668 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:57,724 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:57,937 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:48:58,189 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:58,465 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:48:58,719 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:48:59,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:48:59,764 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2020-08-22 02:48:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:48:59,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-22 02:48:59,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:48:59,770 INFO L225 Difference]: With dead ends: 470 [2020-08-22 02:48:59,770 INFO L226 Difference]: Without dead ends: 467 [2020-08-22 02:48:59,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:48:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-08-22 02:48:59,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 361. [2020-08-22 02:48:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-22 02:48:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-22 02:48:59,843 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 83 [2020-08-22 02:48:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:48:59,844 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-22 02:48:59,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:48:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-22 02:48:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 02:48:59,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:48:59,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:48:59,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:48:59,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:48:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:48:59,847 INFO L82 PathProgramCache]: Analyzing trace with hash 453090503, now seen corresponding path program 1 times [2020-08-22 02:48:59,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:48:59,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162423696] [2020-08-22 02:48:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:48:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,117 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:00,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:49:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 02:49:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 02:49:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:00,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162423696] [2020-08-22 02:49:00,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:00,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:49:00,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170310354] [2020-08-22 02:49:00,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:49:00,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:00,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:49:00,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:49:00,240 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 9 states. [2020-08-22 02:49:01,096 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:01,326 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:49:01,570 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:01,795 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:02,813 INFO L93 Difference]: Finished difference Result 808 states and 990 transitions. [2020-08-22 02:49:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:49:02,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-22 02:49:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:02,818 INFO L225 Difference]: With dead ends: 808 [2020-08-22 02:49:02,818 INFO L226 Difference]: Without dead ends: 471 [2020-08-22 02:49:02,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:49:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-22 02:49:02,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 371. [2020-08-22 02:49:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-08-22 02:49:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2020-08-22 02:49:02,895 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 84 [2020-08-22 02:49:02,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:02,895 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2020-08-22 02:49:02,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:49:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2020-08-22 02:49:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 02:49:02,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:02,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:02,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:49:02,897 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:02,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:02,898 INFO L82 PathProgramCache]: Analyzing trace with hash 475722757, now seen corresponding path program 1 times [2020-08-22 02:49:02,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:02,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354695841] [2020-08-22 02:49:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,132 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:03,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:49:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 02:49:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 02:49:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:03,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354695841] [2020-08-22 02:49:03,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:03,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:49:03,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516412948] [2020-08-22 02:49:03,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:49:03,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:03,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:49:03,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:49:03,277 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand 11 states. [2020-08-22 02:49:03,895 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:49:04,150 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:04,367 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:04,965 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:05,210 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:05,435 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:49:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:06,576 INFO L93 Difference]: Finished difference Result 832 states and 1030 transitions. [2020-08-22 02:49:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:49:06,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-22 02:49:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:06,583 INFO L225 Difference]: With dead ends: 832 [2020-08-22 02:49:06,583 INFO L226 Difference]: Without dead ends: 485 [2020-08-22 02:49:06,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:49:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-22 02:49:06,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-22 02:49:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-22 02:49:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2020-08-22 02:49:06,664 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 84 [2020-08-22 02:49:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:06,664 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2020-08-22 02:49:06,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:49:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2020-08-22 02:49:06,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 02:49:06,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:06,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:06,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:49:06,667 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1501214756, now seen corresponding path program 1 times [2020-08-22 02:49:06,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:06,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002816544] [2020-08-22 02:49:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,936 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:49:06,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:49:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:49:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:49:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:49:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:49:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:49:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:49:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:49:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:49:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:49:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 02:49:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 02:49:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:49:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:49:07,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002816544] [2020-08-22 02:49:07,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:49:07,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:49:07,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830837513] [2020-08-22 02:49:07,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:49:07,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:49:07,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:49:07,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:49:07,054 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand 7 states. [2020-08-22 02:49:07,489 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:07,992 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:49:10,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:49:10,258 INFO L93 Difference]: Finished difference Result 1174 states and 1504 transitions. [2020-08-22 02:49:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:49:10,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-22 02:49:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:49:10,265 INFO L225 Difference]: With dead ends: 1174 [2020-08-22 02:49:10,266 INFO L226 Difference]: Without dead ends: 819 [2020-08-22 02:49:10,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:49:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-22 02:49:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 699. [2020-08-22 02:49:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-08-22 02:49:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 821 transitions. [2020-08-22 02:49:10,495 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 821 transitions. Word has length 84 [2020-08-22 02:49:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:49:10,497 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 821 transitions. [2020-08-22 02:49:10,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:49:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 821 transitions. [2020-08-22 02:49:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:49:10,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:49:10,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:49:10,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:49:10,506 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:49:10,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:49:10,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1300385726, now seen corresponding path program 1 times [2020-08-22 02:49:10,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:49:10,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599295383] [2020-08-22 02:49:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:49:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:49:10,622 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:49:10,622 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:49:10,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:49:10,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:49:10 BoogieIcfgContainer [2020-08-22 02:49:10,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:49:10,682 INFO L168 Benchmark]: Toolchain (without parser) took 30816.05 ms. Allocated memory was 137.9 MB in the beginning and 663.7 MB in the end (delta: 525.9 MB). Free memory was 100.3 MB in the beginning and 606.9 MB in the end (delta: -506.7 MB). Peak memory consumption was 513.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:10,683 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:49:10,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.41 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 100.0 MB in the beginning and 167.6 MB in the end (delta: -67.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:10,691 INFO L168 Benchmark]: Boogie Preprocessor took 107.14 ms. Allocated memory is still 199.8 MB. Free memory was 167.6 MB in the beginning and 163.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:10,692 INFO L168 Benchmark]: RCFGBuilder took 1127.61 ms. Allocated memory was 199.8 MB in the beginning and 229.6 MB in the end (delta: 29.9 MB). Free memory was 163.3 MB in the beginning and 193.1 MB in the end (delta: -29.8 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:10,695 INFO L168 Benchmark]: TraceAbstraction took 28832.06 ms. Allocated memory was 229.6 MB in the beginning and 663.7 MB in the end (delta: 434.1 MB). Free memory was 193.1 MB in the beginning and 606.9 MB in the end (delta: -413.8 MB). Peak memory consumption was 514.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:49:10,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.41 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 100.0 MB in the beginning and 167.6 MB in the end (delta: -67.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.14 ms. Allocated memory is still 199.8 MB. Free memory was 167.6 MB in the beginning and 163.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1127.61 ms. Allocated memory was 199.8 MB in the beginning and 229.6 MB in the end (delta: 29.9 MB). Free memory was 163.3 MB in the beginning and 193.1 MB in the end (delta: -29.8 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28832.06 ms. Allocated memory was 229.6 MB in the beginning and 663.7 MB in the end (delta: 434.1 MB). Free memory was 193.1 MB in the beginning and 606.9 MB in the end (delta: -413.8 MB). Peak memory consumption was 514.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] int waterLevel = 1; [L77] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L395] int pumpRunning = 0; [L396] int systemActive = 1; [L769] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L258] int retValue_acc ; [L259] int tmp ; [L263] FCALL select_helpers() [L264] FCALL select_features() [L265] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L265] RET, EXPR valid_product() [L265] tmp = valid_product() [L267] COND TRUE \read(tmp) [L269] FCALL setup() [L270] CALL runTest() [L249] CALL test() [L318] int splverifierCounter ; [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; [L322] int tmp___2 ; [L325] splverifierCounter = 0 [L327] COND TRUE 1 [L329] COND TRUE splverifierCounter < 4 [L335] tmp = __VERIFIER_nondet_int() [L337] COND TRUE \read(tmp) [L339] CALL waterRise() [L94] COND TRUE waterLevel < 2 [L95] waterLevel = waterLevel + 1 [L339] RET waterRise() [L345] tmp___0 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___0) [L349] CALL changeMethaneLevel() [L106] COND FALSE !(\read(methaneLevelCritical)) [L109] methaneLevelCritical = 1 [L349] RET changeMethaneLevel() [L355] tmp___2 = __VERIFIER_nondet_int() [L357] COND FALSE !(\read(tmp___2)) [L363] tmp___1 = __VERIFIER_nondet_int() [L365] COND TRUE \read(tmp___1) [L372] CALL timeShift() [L402] COND FALSE !(\read(pumpRunning)) [L409] COND TRUE \read(systemActive) [L411] CALL processEnvironment() [L457] int tmp ; [L460] COND FALSE !(\read(pumpRunning)) [L475] CALL processEnvironment__wrappee__highWaterSensor() [L431] int tmp ; [L434] COND TRUE ! pumpRunning [L436] CALL, EXPR isHighWaterLevel() [L554] int retValue_acc ; [L555] int tmp ; [L556] int tmp___0 ; [L560] CALL, EXPR isHighWaterSensorDry() [L156] int retValue_acc ; [L159] COND FALSE !(waterLevel < 2) [L163] retValue_acc = 0 [L164] return (retValue_acc); [L560] RET, EXPR isHighWaterSensorDry() [L560] tmp = isHighWaterSensorDry() [L562] COND FALSE !(\read(tmp)) [L565] tmp___0 = 1 [L567] retValue_acc = tmp___0 [L568] return (retValue_acc); [L436] RET, EXPR isHighWaterLevel() [L436] tmp = isHighWaterLevel() [L438] COND TRUE \read(tmp) [L440] CALL activatePump() [L485] pumpRunning = 1 [L440] RET activatePump() [L475] RET processEnvironment__wrappee__highWaterSensor() [L411] RET processEnvironment() [L417] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L115] int retValue_acc ; [L118] retValue_acc = methaneLevelCritical [L119] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L509] int retValue_acc ; [L512] retValue_acc = pumpRunning [L513] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L388] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1086 SDtfs, 1822 SDslu, 983 SDs, 0 SdLazy, 5120 SolverSat, 1182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=699occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...